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Human body lower limb joint angle measuring method and system

A technology of joint angle and measurement method, which is applied in the field of sports medicine and can solve problems such as the lack of data basis for joint angle rehabilitation of lower extremities

Active Publication Date: 2021-06-22
上海橙捷健康科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a method and system for measuring the joint angles of the lower limbs, which solves the technical problem that the technical solutions in the prior art cannot combine the joint angles of the lower limbs and gait data to provide the basis for rehabilitation data. The bottom pressure data realizes the automatic calculation of the joint angle of the knee joint and hip joint of the lower limbs, thereby providing a data basis for the design and improvement of the plantar orthotic device, and providing a data basis for the joint analysis of the subsequent plantar pressure distribution and joint angle

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  • Human body lower limb joint angle measuring method and system
  • Human body lower limb joint angle measuring method and system

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Embodiment 1

[0039] refer to Figure 1-2 As shown, the embodiment of the present application provides a method for measuring joint angles of lower limbs of a human body, and the method includes the following steps.

[0040] Step S1: receiving the pressure data collected by the pressure collection device under gait movement in real time, and simultaneously receiving the video data of lower limb posture during gait movement collected by video collection devices in multiple directions.

[0041] In this step, the pressure collection device adopts the pressure sensor in the pressure treadmill, and collects the pressure data and gait distribution in the gait movement through the pressure sensor.

[0042] The video acquisition equipment adopts four RGB visible light cameras, and is respectively placed on the front, right behind, and left and right sides of the pressure treadmill; The direction is vertical, 1m away from the pressure treadmill, and it is used to collect the video data of varus and i...

Embodiment 2

[0056] This embodiment provides a system for measuring joint angles of human lower limbs, including: a data transmission module 100 , a data calibration module 200 , a segment division module 300 , a coordinate establishment module 400 and an angle calculation module 500 .

[0057] The data transmission module 100 is configured to receive in real time the pressure data collected by the pressure collection device under the gait movement, and simultaneously receive the lower limb posture video data collected by the video collection device in multiple directions during the gait movement;

[0058] The data calibration module 200 is configured to align the pressure data and the time series in the video data; and based on the preset video capture device of the lower extremity, the identifiable marker points can be obtained to obtain the relative positional relationship between the video capture devices, and to calibrate multiple video data. imaging space;

[0059] The segment divisi...

Embodiment 3

[0063] In one embodiment, a computer device is provided, including a memory and a processor, wherein computer-readable instructions are stored in the memory, and when the computer-readable instructions are executed by the processor, the following steps are implemented when the processor executes the computer-readable instructions :

[0064] S1: Receive real-time pressure data of gait movement collected by pressure collection equipment, and simultaneously receive video data of lower limb posture during gait movement collected by video collection equipment in multiple directions;

[0065] S2: Align the pressure data and the time series in the video data; and based on the preset video acquisition equipment of the lower extremities, the marker points can be identified, the relative positional relationship between the video acquisition equipment can be obtained, and the imaging space of multiple video data can be calibrated;

[0066] S3: Based on the synchronized pressure data and ...

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Abstract

The invention discloses a human body lower limb joint angle measuring method and system. The method comprises the following steps: S1, receiving pressure data and lower limb posture video data in real time; S2, aligning time sequences in the pressure data and the video data, and calibrating an imaging space; S3, determining a gait cycle, and dividing the video stream into a plurality of video clips according to the starting and ending time of the gait cycle; S4, detecting lower limb joint key points in each video clip by using an OpenPose open source algorithm, constructing a lower limb three-dimensional coordinate, and acquiring the spatial position of each lower limb joint key point; and S5, establishing a human body coordinate system, and calculating an included angle between the femur and the tibia and the human body coordinate system, an included angle between the femur and the tibia and an upward vector perpendicular to the ground, and an included angle between the femur and the tibia. According to the method, automatic calculation of the joint angles of the knee joint and the hip joint is realized by using multi-view imaging and plantar pressure data, so that a data basis is provided for design and improvement of a plantar orthopedic device, and a data basis is provided for conjoint analysis of follow-up plantar pressure distribution and the joint angles.

Description

technical field [0001] The invention relates to the technical field of sports medicine, in particular to a method and system for measuring joint angles of lower limbs of a human body. Background technique [0002] Studies have found that stroke, cerebral palsy, spinal cord injury and other limb movement dysfunction caused by nervous system function damage are increasing. In addition, middle-aged and elderly people have decreased limb joint movement ability and limb movement ability as they age. Reaching the level of normal people, motor dysfunction seriously affects their daily life. [0003] When people with movement disorders of the lower limbs perform gait movements, due to muscle rigidity, the bending angles of joints such as knee joints and hip joints cannot be bent to the gait state of normal people, which has led to abnormal gait for a long time. Existing equipment tools such as crutches are used to assist people with lower limb movement disorders to go out, or rely ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/11A61B5/103
CPCA61B5/1122A61B5/1128A61B5/112A61B5/1038
Inventor 蔡宗远朱哲敏张吉萍郑诚功
Owner 上海橙捷健康科技有限公司
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